Back supporting device for large-caliber reflector

Abstract

The invention provides a back supporting device for a large-caliber reflector. The supporting device comprises the large-caliber reflector, a lens back plate, a rotating shaft assembly, an adjusting connecting assembly, an adjusting rod assembly, a clamping block, a supporting plate and bolts. The rotating shaft assembly serves as a rotating shaft fulcrum of the large-caliber reflector, a spherical surface knuckle bearing of a standard component is adopted as a rotation main structure, the function of the spherical surface knuckle bearing and the function of a spherical hinge are the same, and the three translational motion freedom degrees of the reflector are restrained. A spiral driver is manually rotated to drive the adjusting connecting assembly to push the large-caliber reflector to do pitching and deflecting movement. After adjusting is finished, an adjusting nut is locked to limit the two rotating freedom degrees of the reflector. The face internal rotation freedom degree of the large-caliber reflector is restrained through the adjusting rod assembly. The back supporting device has the submicron-level positioning precision, can meet the requirements for various using angles and is simple in structure and accurate in positioning, pitching and deflecting two-dimensional precise adjustment of the online state and the offline state is achieved, and the designing cost and the manufacturing cost are reduced.

Description

technical field [0001] The invention belongs to the field of precision optics, and in particular relates to a back support device for a large-diameter reflector. Background technique [0002] Due to the temperature change of the use environment and the insurmountable gravitational field of the reflector assembly, the reflector will be deformed, resulting in a decrease in the surface shape accuracy of the reflector, and finally resulting in a decrease in the quality and energy of the reflected beam. In order to ensure the quality and energy of the reflected light beams in various scientific devices, there are strict requirements on the mirror deformation of the mirror. A reasonable support method will greatly reduce the influence of factors such as the environment on the mirror assembly, and it is an effective method to set a certain degree of flexible links in the support method, such as flexible spring sheets, mercury belt supports, and spherical hinge supports. and many ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies in the prior art that cannot fully meet the surface accuracy requirements of optical elements and that the radial volume is relatively large, the present invention provides a back support device for large-diameter mirrors, which is a large-diameter spherical joint bearing structure. Back Support for Aperture Mirrors

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